Predicted to enable proline-rich region binding activity. Predicted to be involved in cytoskeleton organization; positive regulation of membrane protein ectodomain proteolysis; and regulation of cell morphogenesis. Predicted to be located in cytosol and nucleoplasm. Predicted to be active in plasma membrane. Is expressed in gut; metanephros; metencephalon part of 4th ventricle choroid plexus; and olfactory epithelium. Orthologous to human SH3D19 (SH3 domain containing 19). [provided by Alliance of Genome Resources, Apr 2022]